bug#13906: 24.3; Display problems in Python shell

[Glenn Morris <rgm@gnu.org>]

Any ideas about recent changes which might have caused this?

Konrad Hinsen wrote:

> I have been using Python mode with the Python shell configured for
> IPython (as explained in the comments in python.el) for a while with
> Emacs 24.2.92 and now with 24.3rc2. It has worked perfectly fine in
> 24.2.92, but in 24.3rc2 I get frequent display problems which
> unfortunately I have not yet been able to make reproducible. The
> trouble always starts with the display of a Python
> traceback. Somewhere in the middle of the traceback, terminal escape
> characters (used by IPython for coloring) are shown instead of being
> executed. Here is an example (a screen capture is attached):
>
> /Users/hinsen/Programs/MMTK/main_python_path/MMTK/Trajectory.pyc in __getattr__(self, name)
>     254             var = self.trajectory.file.variables[name]
>     255         except KeyError:
> --> 256             raise AttributeError("no variable named " + name)
>     257         if 'atom_number' in var.dimensions:
>     258             return TrajectoryVariable(self.universe, self, name)
>
> AttributeError: no variable named file
>> /Users/hinsen/Programs/MMTK/main_python_path/MMTK/Trajectory.py(256)__getattr__()
>     255         except KeyError:
> --> 256             raise AttributeError("no variable named " + name)
>     257         if 'atom_number' in var.dimensions:
>
> ipdb>
>
> In GNU Emacs 24.3.1 (x86_64-apple-darwin11.4.2, NS apple-appkit-1138.51)
>  of 2013-03-08 on Konrad-Hinsens-MacBook-Pro.local
> Windowing system distributor `Apple', version 10.3.1138
> Configured using:
>  `configure '--with-ns''
>
> Important settings:
>   value of $LC_ALL: en_US.UTF-8
>   value of $LANG: en_US.UTF-8
>   locale-coding-system: utf-8-unix
>   default enable-multibyte-characters: t
>
> Major mode: Inferior Python
>
> Minor modes in effect:
>   compilation-shell-minor-mode: t
>   global-auto-revert-mode: t
>   recentf-mode: t
>   show-paren-mode: t
>   shell-dirtrack-mode: t
>   diff-auto-refine-mode: t
>   global-undo-tree-mode: t
>   undo-tree-mode: t
>   yas-global-mode: t
>   yas-minor-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>   transient-mark-mode: t